Here are some suggestions:

Creating a “no smoking” rule for your home and car if you live together.

Keep your ashtrays, lighters, and cigarettes out of sight.

Be supportive of smokefree activities, like going to the movies instead of a bar.

You don’t want your own smoking to trigger an urge for a friend or loved one to reach for a cigarette. It’s important to understand someone’s triggers and think about ways help eliminate that temptation for them.